:root {
  --bg-1: #f7f3ea;
  --bg-2: #e6ddcc;
  --panel: #fff9ef;
  --ink: #2a2318;
  --ink-soft: #605441;
  --accent: #a94224;
  --line: #d8ccb4;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 20% 10%, #fdf8ee 0%, transparent 35%),
    radial-gradient(circle at 80% 20%, #efe3cd 0%, transparent 28%),
    linear-gradient(160deg, var(--bg-1), var(--bg-2));
  font-family: Georgia, "Times New Roman", serif;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: "Palatino Linotype", "Book Antiqua", Palatino, serif;
  letter-spacing: 0.02em;
}

generator-app {
  display: block;
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem;
}

.layout {
  display: grid;
  gap: 1rem;
  grid-template-columns: 340px 1fr;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
  box-shadow: 0 12px 26px rgba(57, 44, 23, 0.08);
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.group {
  display: grid;
  gap: 0.7rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.75rem;
  background: #fffcf5;
}

.group h3 {
  margin: 0 0 0.6rem;
  font-size: 1rem;
}

.row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
  margin: 0;
}

.row > * {
  min-width: 0;
}

.range-row {
  grid-template-columns: minmax(0, 1fr);
}

.toggle-row {
  grid-template-columns: minmax(0, 1fr);
}

.page-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.page-toggle input[type="checkbox"] {
  width: 1rem;
  height: 1rem;
  accent-color: var(--accent);
}

.range-row wa-slider {
  width: 100%;
}

.seed-row {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
}

.actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.6rem;
}

.actions.single {
  grid-template-columns: 1fr;
}

.app-toast {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  background: var(--wa-color-neutral-0, #fff);
  border: 1px solid var(--wa-color-neutral-200, #e2e8f0);
  border-radius: 0.5rem;
  padding: 0.75rem 1rem;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  z-index: 9999;
  max-width: 20rem;
  font-size: 0.9rem;
  opacity: 0;
  transform: translateY(0.5rem);
  transition: opacity 200ms ease, transform 200ms ease;
}

.app-toast--show {
  opacity: 1;
  transform: translateY(0);
}

.app-toast--success { border-left: 4px solid var(--wa-color-success-600, #16a34a); }
.app-toast--danger  { border-left: 4px solid var(--wa-color-danger-600, #dc2626); }
.app-toast--brand   { border-left: 4px solid var(--wa-color-brand-600, #2563eb); }
.app-toast--neutral { border-left: 4px solid var(--wa-color-neutral-400, #94a3b8); }

.copy-row {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.output-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.output-area {
  min-height: 420px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fffefb;
  padding: 0.9rem;
  overflow: auto;
}

.output-area pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.92rem;
}

.rich {
  min-height: 380px;
  outline: none;
}

.meta {
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.regex-dialog {
  width: min(900px, 92vw);
  max-height: 88vh;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem;
  color: var(--ink);
  background: #fffdf7;
}

.regex-dialog::backdrop {
  background: rgba(20, 16, 10, 0.45);
}

.regex-dialog h3 {
  margin: 0 0 0.5rem;
}

.regex-dialog p {
  margin: 0.4rem 0;
  color: var(--ink-soft);
}

.guide-list {
  margin: 0.5rem 0 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.45rem;
}

.guide-note {
  margin-top: 0.6rem;
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.regex-list {
  margin-top: 0.8rem;
  display: grid;
  gap: 0.7rem;
  max-height: 58vh;
  overflow: auto;
  padding-right: 0.2rem;
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
}

.regex-item {
  border-radius: 8px;
  padding: 0.7rem;
  display: grid;
  gap: 0.5rem;
}

.regex-item-head {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  align-items: baseline;
  flex-wrap: wrap;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.regex-item pre {
  margin: 0;
  padding: 0.75rem 4.25rem 0.75rem 0.65rem;
  background: #f7f2e7;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 0.84rem;
  overflow: auto;
}

.regex-code-wrap {
  position: relative;
}

.regex-code-wrap wa-copy-button {
  position: absolute;
  top: 0.45rem;
  right: 0.45rem;
}

.regex-actions {
  margin-top: 0.8rem;
  display: flex;
  justify-content: flex-end;
}

@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
  }
}